The year 198 AD saw Cao Cao return to Nanyang Commandery for a second campaign against Zhang Xiu, a conflict defined not by a decisive siege, but by strategic maneuvering, near-disaster, and brilliant counterattacks.
Just one year after the catastrophic defeat at Wancheng (197 AD)—where Cao Cao lost his heir Cao Ang, his loyal bodyguard Dian Wei, and his nephew Cao Anmin—he now faced a renewed threat from the same warlord, Zhang Xiu, now reinforced by Liu Biao’s Jing Province forces.
Drawing from Chen Shou’s Records of the Three Kingdoms (Sanguozhi) and Luo Guanzhong’s Romance of the Three Kingdoms, this article examines how Cao Cao, cornered by dual threats from the south and north, turned a potential disaster into a tactical victory through deception, ambush, and battlefield adaptability.
The Lingering Enmity
The 197 AD campaign against Zhang Xiu had ended in humiliation and tragedy for Cao Cao. His arrogant seizure of Zhang Ji’s widow provoked Zhang Xiu’s surprise night attack, resulting in the deaths of Cao Ang, Cao Anmin, and Dian Wei, and a rout of the Cao army.
Though Zhang Xiu withdrew to Rangcheng after the battle, the deep enmity between the two warlords remained. Cao Cao, having consolidated power in the Central Plains, could not tolerate a hostile force on his southern border. Thus, in March 198 AD, he launched a second southern expedition, determined to eliminate Zhang Xiu once and for all.
The Siege of Rangcheng
Cao Cao’s army marched swiftly into Nanyang, reaching Rangcheng and immediately laying siege. He cut off Rangcheng’s connection to Wancheng and stationed troops outside the walls, shouting insults and issuing challenges daily to provoke Zhang Xiu into open battle.
But Zhang Xiu, now guided by the brilliant strategist Jia Xu, refused to take the bait. Instead, he adopted a defensive posture, focusing on holding the city. Recognizing the danger of isolation, he sent urgent envoys to Liu Biao, pleading for military intervention.
Jia Xu advised:
“We cannot withstand Cao Cao alone. We must force him into a two-front war. Request Liu Biao to strike at his supply lines—if his rear is threatened, he will have no choice but to retreat.”
Liu Biao, fearing Cao Cao’s growing power, agreed.
Liu Biao’s Intervention
Liu Biao dispatched General Deng Ji with 20,000 elite troops from Jing Province. Deng Ji launched a lightning campaign:
- He captured Huyang, a key logistical base.
- He seized Wuyin, a critical junction on the supply route between Xuchang and Rangcheng.
The loss of Wuyin and Huyang severed Cao Cao’s supply lines, isolating his army in Nanyang.
Even more alarming, intelligence reached Cao Cao that Tian Feng, a chief advisor to Yuan Shao in the north, had urged his lord:
“Now that Cao Cao is deep in the south and Xuchang is weakly defended, we should launch a surprise attack, capture the Emperor, and control the empire from Hebei.”
If Yuan Shao had acted, Cao Cao would have faced a nightmare scenario:
- Zhang Xiu and Liu Biao to the south.
- Yuan Shao to the north.
His very survival hung in the balance.
Cao Cao’s feigned retreat and the ambush
Faced with this existential threat, Cao Cao could not afford a prolonged siege. He devised a ruse to break free.
He ordered his camp burned, abandoned supplies, and began a seemingly disorganized retreat along a broad, open road—a route that suggested panic and collapse.
Zhang Xiu, eager for revenge and victory, ignored Jia Xu’s warning:
“Cao Cao is too skilled to retreat so carelessly. This must be a trap.”
But Zhang Xiu, believing Cao Cao’s army was demoralized and broken, led his main cavalry force in pursuit.
Cao Cao had prepared the perfect ambush:
- Xiahou Yuan and his infantry were hidden in the hills on both sides of the road.
- Cao Cao himself led a mobile cavalry force to lure the enemy deeper.
When Zhang Xiu’s troops entered the kill zone, Xiahou Yuan’s forces surged down from the mountains, cutting off the retreat. At the same moment, Cao Cao turned and charged.
Caught between pincer forces, Zhang Xiu’s army was routed. The Cao forces pursued relentlessly, achieving a stunning reversal:
- They recaptured Wuyin.
- They captured General Deng Ji alive.
- They took thousands of Jing Province soldiers as prisoners.
The final twist: Jia Xu’s masterstroke in defeat
After the defeat, Jia Xu made a counterintuitive suggestion:
“Now is the time to attack again. Cao Cao, having won, will be overconfident and lax in guarding his rear.”
Skeptical but trusting Jia Xu, Zhang Xiu launched a second pursuit with his remaining forces.
True to Jia Xu’s prediction, Cao Cao’s rearguard was unprepared. Zhang Xiu’s forces inflicted heavy casualties, capturing supplies and avenging part of their earlier loss.
This “victory in defeat” demonstrated Jia Xu’s profound understanding of war psychology—a rare moment where tactical insight overcame numerical and strategic disadvantage.
A pyrrhic victory and strategic stalemate
Though Cao Cao failed to capture Rangcheng, the 198 AD campaign was a tactical success:
- He broke the siege under dire circumstances.
- He inflicted heavy losses on Zhang Xiu and Liu Biao.
- He eliminated the immediate threat to his southern flank.
Yet, the strategic objective—complete subjugation of Zhang Xiu—remained unfulfilled. It would not be until 200 AD, after Yuan Shao’s defeat at Guandu, that Zhang Xiu, advised once more by Jia Xu, would finally surrender to Cao Cao.
The second campaign against Zhang Xiu stands as a testament to Cao Cao’s resilience and tactical genius, but also to the limits of military power when faced with geopolitical complexity and brilliant adversaries.
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